Unless I am mistaking, the only reason subsites aren't weighted is because competition isn't developed enough to warrant inclusion on the main site. This is the only logical reason I can think of. To say a subsite game isn't "similar enough to Sonic" to get weighted is duplicitous. In that case they're completely ignoring the variety in Sonic games tracked. Sonic Drift is nothing like Sonic 2; Sonic 2 is nothing like Sonic Adventure; Sonic Adventure is nothing like Shadow, etc. In the vein of "don't include it, it's too different", let's partition 2D and 3D Sonics in weight because they have little in common. Surely we should not penalize players in the rankings just because they aren't good at one type of game.
Brawl has "nothing to do with Sonic", sure, but why does it have to? Everybody agrees it would be beneficial for the site, with deep competition value and the interest group to sustain it, and as previously stated relegating something with so many potential (and more importantly present) competitors to subsite status makes no sense. Why trivialize something this invigorating? Just because we've never given weight to a game loosely involving Sonic before doesn't mean we never should.
In response to PPA and a few others who suggest all games with Sonic and co present deserve tracking on the same grounds: you are overlooking the most important factor of a game's inclusion in a subsite, popularity. If a large playerbase exists then a large playerbase should be allowed to complete. 'Sega Superstars Tennis' doesn't have anywhere near the player pool as Brawl, nor does NiGHTS, and certaintly not Mario and Sonic at the Olympics. On that last point, the standard of trackable games has changed, we no longer add games knee-jerk just because they involve Sonic. Why do you think it took Rivals 2 and Sonic 06 so long to get included? There were serious considerations as to whether they had quality enough to add. If you deem M&S worthy of tracking then convince Rolken it is (taking care not to pester him of course, which will only make you look wheedling and desperate to be amongst a handful of competitors).
In semation: our standards of quality have changed, and while we are 'The Sonic Center', we should not take the car just because it's more familiar than the airplane.